一道完形填空Thehumansnoseisanunderratedtool.Humansareoftenthoughttobeinsensitivesmellerscomparedwithanimals,thisislargelybecause,unlikeanimals,westandupright.A.althoughB.asC.butD.whilebut前后不是表示对比嘛，

Question

一道完形填空
The humans nose is an underrated tool.Humans are often thought to be insensitive smellers compared with animals,___ this is largely because,unlike animals,we stand upright.
A.although
B.as
C.but
D.while
but前后不是表示对比嘛，我觉得没有对比

Answer 1

C but
这题要从头注意整段话想表达什么：
第一句,注意 underrated,点出了主旨想为人类的鼻子翻案
第二句前半,注意 thought to be insensitive,被认为是不够敏锐的
第二句后半,this is largely because ...给了个说法,因为什么原因.
因此,整段话是对那些认为人类鼻子不如其他动物的论调提出反驳.
之所以选 but ,就在于对说这话的人的立场要能够充分理解.
否则,although 和 while 从语法上就也都能说得过去了.